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Design and Analysis of Above Knee Prosthetic Leg Using MR Damper
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 Title & Authors
Design and Analysis of Above Knee Prosthetic Leg Using MR Damper
Park, Jinhyuk; Kang, Je-Won; Choi, Seung-Bok;
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A prosthetic knee for above-knee (AK) amputee is categorized into passive and active type. The passive prosthetic knee is generally made by elastic material. Although AK amputee can easily walk by using passive prosthetic leg, knee joint motions are not similar to ordinary persons. The active prosthetic leg can control the knee angle owing to the actuator and microprocessor. However, the active type is not cost-effective and the stability may be lost due to the malfunction of sensors. In order to resolve these disadvantages of passive and active type, a semi-active prosthetic knee which can control the knee angle is proposed in this work. The proposed semi-active one requires a less input energy but provides active type performance. In order to achieve this goal, in this work, a semi-active prosthetic knee using magneto-rheological (MR) damper for AK amputees is designed. The MR damper can support the weight of body by using less energy than actuator of active prosthetic. It can control knee angle by inducing the magnetic field at the time of stance phase. This salient characteristic is evaluated and presented in this work.
Magneto-rheological Fluid;Nonlinear PD Control;MR Damper;Above Knee Prosthetic Knee;
 Cited by
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